Found this in the trash a little over a month ago and finally got around to testing it a few days ago.
It's a Compaq Evo D500 desktop, made right before the HP disaster that ruined Compaq. So it's one of the very last true Compaqs. Naturally, it works absolutely fine, as the Evo was basically an updated version of the Deskpro EN, which was a very, very reliable computer.
This one is an early socket 478 Pentium 4, which a 1.6GHz Willamette chip installed. I was very shocked that it wasn't a Northwood, because it runs really good! The Willamette in my Dell Dimension 8100 (socket 423) is unbearably slow.
I may upgrade it to a 2GHz Northwood at some point, but for now it's running really well.
The biggest shock with this PC is that is uses PC133 SDRAM! I knew there were some early P4s that used this as a cost-effective memory solution, because RDRAM was super expensive and DDR didn't exist yet, but this is the first one I have owned. Was really excited when I realized this.
I have set it up with a Windows 98/2000 dual boot (I actually installed two separate hard drives for this). This is the first time I have tried Windows 98 on a Pentium 4, and DAMN it's fast!
Here's screenshots of the Windows 98 and 2000 running:
Very happy with this computer. I have been using to transfer software to my older computers, since it's new enough that I can connect to Winworld and download software, and old enough that I can easily network it to Windows 95/98 computers. Plus, using a true-vintage computer to get transfer software to my even-more-vintage computers is really cool! (I certainly consider an 18-year-old computer to be vintage anyways). Anything Pentium 4 or older I consider to be vintage.